.left{
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  padding: 20px;
  .keyTrigger{
    width: calc((100% - 20px) / 3);
    margin: 0 10px 10px 0;
    height: 100px;
    background: #8b8b8b;
    text-align: center;
    line-height: 100px;
    border-radius: 5px;
    cursor: pointer;
    &:nth-child(3n) {
      margin-right: 0;
    }
    // &.checked {
    //   box-shadow: none;
    // }
    &.active{
      background: orange;
    }
  }
}